The radiation tolerant readout system for srambased neutron detector

Makowski, Dariusz; Grecki, M.; Mukherjee, Bhaskar; Oswiercz, B.; Simrock, Stefan; Napieralski, A.

doi:10.1109/mixdes.2006.1706545

Cited by 4 publications

(5 citation statements)

References 11 publications

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“…A few different versions of RadMon readout were designed and examined, while SRAM devices were being tested [4,10]. Hardware and software methods were used to protect the devices against SEUs.…”

Section: The Readout Radiation-tolerant Systemmentioning

confidence: 99%

Radiation monitoring system for X-FEL

Makowski¹,

Mukherjee²,

Simrock³

et al. 2007

Meas. Sci. Technol.

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Radiation produced during the operation of linear accelerators poses a potential threat to electronic devices installed in the accelerator tunnel. Therefore, a distributed radiation monitoring system was installed at five various spots in the Free electron LASer in Hamburg (FLASH) tunnel. The presented system allows us to measure radiation produced during the operation of a linear accelerator driving FLASH in real time. The system is composed of two modules: radiation-sensitive sensors and a radiationtolerant readout system constructed with the application of commercial-offthe-shelf (COTS) components. The neutron dosimeter was constructed using an innovative application of a static random access memory (SRAM), whereas a well-known radiation-sensitive RadFET was used for gamma quantification.

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Section: The Readout Radiation-tolerant Systemmentioning

confidence: 99%

Radiation monitoring system for X-FEL

Makowski¹,

Mukherjee²,

Simrock³

et al. 2007

Meas. Sci. Technol.

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“…A temperature compensated current source was applied to avoid errors in a measured threshold voltage of RadFET sensor, caused by temperature changes in the accelerator tunnel [4]. The amplified threshold voltage is digitalised using a 16-bit analog-digital converter (ADC) and then sent to the PC computer [10].…”

Section: The Readout System Of Radfet Dosimetermentioning

confidence: 99%

“…The radiation monitoring system is composed of two modules: radiation sensitive sensors and the radiation tolerant readout circuit able to operate correctly in the radioactive environment of the linear accelerator [9][10]. The block diagram of the radiation monitoring system is presented in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The RadMon system is built with an application of commercial off the shelf components (COTS) because of the extremely high costs of the dedicated radiation-hardened hardware. The system was designed in such a way to be able to tolerate malfunctions provoked by radiation [9][10].…”

Section: Introductionmentioning

confidence: 99%

“…The number of single event effects (SEUs) generated in a memory allows to gauge neutron fluence. The idea of neutron measurement and the construction of the dosimeter can be found in literature in details [4,[10][11][12]]. …”

Section: Introductionmentioning

confidence: 99%

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<title>Application of RadFET for dosimetry of ionizing radiation</title>

et al. 2006

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Bremsstrahlung gamma radiation and neutrons are produced during the operation of high-energy linear accelerators. A single circular tunnel is built for the X-ray Free Electron Laser (X-FEL), therefore most of electronic devices used to control the machine are going to be placed in the same vault as the main beam pipe. Therefore, the devices will be subjected to neutron and gamma radiation influence.Knowledge of neutron and gamma doses are crucial to understand and interpret radiation effects on electronic devices and systems dedicated to the operation in the environment of high-energy linear accelerators. Indeed, it is advisable to monitor radiation produced in the tunnel of X-FEL in real time to estimate the danger and the life-time of electronic components and devices.The real time monitoring system dedicated to measure radiation produced in a linear accelerator tunnel was designed. The system utilizes two different types of detectors to gauge neutron fluence and gamma radiation dose during the operation of the accelerator driving X-FEL.Research described in this paper is focused on real time gamma radiation dosimetry. Silicon-based gamma-sensitive dosimeter RadFET was employed to quantify radiation produced during an operation of a linear accelerator.In order to fully investigate the feasibility of RadFET detector for gamma dosimetry various experiments and gamma radiation exposure tests were carried out using a cesium source and inside FLASH (Free Electron Laser At Hamburg) facility placed in a high-energy Research Centre DESY.

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The radiation tolerant readout system for srambased neutron detector

Makowski

Grecki

Mukherjee³

et al. 2006

Proceedings of the International Conference Mixed Design of Integrated Circuits and System, 2006. MIXDES 2006.

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Bremsstrahlung gamma radiation and photoneutrons are produced during the operation of high energy linear accelerators. The functionality of electronic devices that are placed inside accelerator tunnels can be jeopardized because of the negative influence of generated radiation. Therefore, a radiation monitoring system able to gauge neutron fluence and gamma dose in real time was constructed. Radiation-sensitive dosimeters cooperate with a readout system. The readout continuously measures both types of radiation and sends quantified data to a main computer. The system is also placed in the tunnel, hence it must be insensitive to radiation or able to tolerate induced malfunctions. A few different readout systems were designed. This work presents the application of different readouts designed using commercial of the shelf (COTS) components. The presented hardware was tested with americiumberyllium neutron source. Finally, the systems were irradiated in a linear accelerator tunnel to estimate their immunity and suitability for a long-term reliable operation in the radioactive field. ABSTRACT: Bremsstrahlung gamma radiation and photoneutrons are produced during the operation of high energy linear accelerators. The functionality of electronic devices that are placed inside accelerator tunnels can be jeopardized because of the negative influence of generated radiation. Therefore, a radiation monitoring system able to gauge neutron fluence and gamma dose in real time was constructed. Radiation-sensitive dosimeters cooperate with a readout system. The readout continuously measures both types of radiation and sends quantified data to a main computer. The system is also placed in the tunnel, hence it must be insensitive to radiation or able to tolerate induced malfunctions. A few different readout systems were designed. This work presents the application of different readouts designed using commercial of the shelf (COTS) components. The presented hardware was tested with americium-beryllium neutron source. Finally, the systems were irradiated in a linear accelerator tunnel to estimate their immunity and suitability for a long-term reliable operation in the radioactive field.

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The radiation tolerant readout system for srambased neutron detector

Cited by 4 publications

References 11 publications

Radiation monitoring system for X-FEL

Radiation monitoring system for X-FEL

<title>Application of RadFET for dosimetry of ionizing radiation</title>

The radiation tolerant readout system for srambased neutron detector

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